New Water-Soluble Duocarmycin Derivatives: Synthesis and Antitumor Activity of A-Ring Pyrrole Compounds Bearing β-Heteroarylacryloyl Groups
摘要:
A series of A-ring pyrrole compounds of duocarmycin bearing 4'-methoxy-beta-heteroarylacryloyl groups were synthesized and evaluated for in vitro anticellular activity against HeLa S-3 cells and in vivo antitumor activity against murine sarcoma 180 in mice. Most of the Li 4'-methoxy-beta-heteroarylacrylates displayed in vitro anticellular activity equivalent to that of 4'-methoxycinnamates, Among the 8-O-[(N-methylpiperazinyl)carbonyl] derivatives of 4'-methoxy-beta-heteroarylacrylates, compound 15b having a (4-methoxy-3,5-pyrimidinyl)acryloyl as segment-B (Seg-B) showed remarkably potent in vivo antitumor activity and low peripheral blood toxicity compared with the A-ring pyrrole derivatives having the trimethoxyindole skeleton in Seg-B, which were equal to 8-O-[(N-methylpiperazinyl)carbonyl] derivatives of 4'-methoxycinnamates. Moreover, these 8-O-[(N-methylpiperazinyl)carbonyl] derivatives of 4'-methoxy-beta-heteroarylacrylates had high aqueous solubility.
A nickel-catalyzed, enantioselective, three-component fluoroalkylarylation of unactivated alkenes with aryl halides and perfluoroalkyl iodides has been described. This cross-electrophile coupling protocol utilizes a chiral nickel/BiOx system as well as a pendant chelating group to facilitate the challenging three-component, asymmetric difunctionalization of unactivated alkenes, providing direct access
Disclosed are novel calcium modulators having formula I:
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Nickel-Catalyzed Asymmetric Reductive Cross-Coupling between Heteroaryl Iodides and α-Chloronitriles
作者:Nathaniel T. Kadunce、Sarah E. Reisman
DOI:10.1021/jacs.5b06466
日期:2015.8.26
A Ni-catalyzed asymmetricreductivecross-coupling of heteroaryl iodides and α-chloronitriles has been developed. This method furnishes enantioenriched α,α-disubstituted nitriles from simple organohalide building blocks. The reaction tolerates a variety of heterocyclic coupling partners, including pyridines, pyrimidines, quinolines, thiophenes, and piperidines. The reaction proceeds under mild conditions
已开发出 Ni 催化的杂芳基碘化物和 α-氯腈的不对称还原交叉偶联。该方法从简单的有机卤化物构建块中提供对映体富集的 α,α-二取代腈。该反应耐受多种杂环偶联物,包括吡啶、嘧啶、喹啉、噻吩和哌啶。该反应在温和的室温条件下进行,不需要预生成有机金属亲核试剂。
[EN] BIS-ARYL ETHERS CONTAINING N-ACYL AZETIDINE AS EGFR/HER2 INHIBITORS<br/>[FR] BIS-ARYL ÉTHERS CONTENANT DE LA N-ACYL AZÉTIDINE EN TANT QU'INHIBITEURS DE L'EGFR/HER2
申请人:ACCUTAR BIOTECHNOLOGY INC
公开号:WO2021231400A1
公开(公告)日:2021-11-18
The invention provides compounds and pharmaceutical compositions thereof, which are useful for inhibiting EGFR and erbB2 activity, as well as methods for using such compounds to treat cancer associated with mutant EGFR and erbB2 activity.
A modular approach to prepare enantioenriched cyclobutanes: synthesis of (+)-rumphellaone A
作者:Jordan C. Beck、Caitlin R. Lacker、Lauren M. Chapman、Sarah E. Reisman
DOI:10.1039/c8sc05444d
日期:——
A modular synthesis of enantioenriched polyfunctionalized cyclobutanes was developed that features an 8-aminoquinolinamide directed C–H arylation reaction. The C–H arylation products were derivatized through subsequent decarboxylative coupling processes. This synthetic strategy enabled a 9-step enantioselective total synthesis of the antiproliferative meroterpenoid (+)-rumphellaone A.
开发了一种对映体富集的多官能化环丁烷的模块化合成方法,其特点是 8-氨基喹啉酰胺引导的 C-H 芳基化反应。C-H芳基化产物通过随后的脱羧偶联过程衍生化。该合成策略实现了抗增殖类裂萜 (+)-rumphellaone A 的 9 步对映选择性全合成。